\documentclass[10pt, a4paper, oneside]{ctexart}
\usepackage{amsmath, amsthm, amssymb, appendix, bm, graphicx, hyperref, mathrsfs}

\usepackage{geometry}  
\geometry{a4paper,left=25mm,right=20mm,top=25mm,bottom=25mm}

\linespread{1.5}

\renewcommand{\equationautorefname}{公式}
\renewcommand{\footnoteautorefname}{脚注}
\renewcommand{\itemautorefname}{项}
\renewcommand{\figureautorefname}{图}
\renewcommand{\tableautorefname}{表}
\renewcommand{\appendixautorefname}{附录}
\renewcommand{\theoremautorefname}{定理}


\begin{document}

% 封面
\input{cover.tex}

% 正文
\newpage
\setcounter{page}{1}
\pagenumbering{arabic}


\input{content.tex}

% 附录
\newpage
\begin{appendices}
    \renewcommand{\thesection}{\Alph{section}}
    % A
    \input{appendixA.tex}
\end{appendices}

\end{document}